State fire officials say a Northern California town of 2,700 people is no longer under an evacuation order but residents have been told to be prepared to leave as a big and fast-growing wildfire burns nearby.

Cal Fire officials had said Friday afternoon that all of San Andreas was under an evacuation order as a fire exploded in size to nearly 80 square miles. They called off the order a short time later, but it wasn't immediately clear what had changed.

Hundreds of residents from tiny rural communities in Calaveras and Amador counties where the fire is burning remain under evacuation orders.

The blaze some 60 miles southeast of Sacramento has burned eight structures and is threatening 6,000. It wasn't clear how many of those were homes.